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i=0;i<n;++i){if(i+r>=e.length||i>=t.length)break;e[i+r]=t[i]}return i}function Q(t){return typeof ArrayBuffer.isView==="function"&&ArrayBuffer.isView(t)}function W(t){return t!==t}},{"base64-js":1,ieee754:5}],3:[function(t,e,r){function n(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}e.exports=n;n.EventEmitter=n;n.prototype._events=undefined;n.prototype._maxListeners=undefined;n.defaultMaxListeners=10;n.prototype.setMaxListeners=function(t){if(!o(t)||t<0||isNaN(t))throw TypeError("n must be a positive number");this._maxListeners=t;return this};n.prototype.emit=function(t){var e,r,n,o,f,a;if(!this._events)this._events={};if(t==="error"){if(!this._events.error||s(this._events.error)&&!this._events.error.length){e=arguments[1];if(e instanceof Error){throw e}else{var h=new Error('Uncaught, unspecified "error" event. ('+e+")");h.context=e;throw h}}}r=this._events[t];if(u(r))return false;if(i(r)){switch(arguments.length){case 1:r.call(this);break;case 2:r.call(this,arguments[1]);break;case 3:r.call(this,arguments[1],arguments[2]);break;default:o=Array.prototype.slice.call(arguments,1);r.apply(this,o)}}else if(s(r)){o=Array.prototype.slice.call(arguments,1);a=r.slice();n=a.length;for(f=0;f<n;f++)a[f].apply(this,o)}return true};n.prototype.addListener=function(t,e){var r;if(!i(e))throw TypeError("listener must be a function");if(!this._events)this._events={};if(this._events.newListener)this.emit("newListener",t,i(e.listener)?e.listener:e);if(!this._events[t])this._events[t]=e;else if(s(this._events[t]))this._events[t].push(e);else this._events[t]=[this._events[t],e];if(s(this._events[t])&&!this._events[t].warned){if(!u(this._maxListeners)){r=this._maxListeners}else{r=n.defaultMaxListeners}if(r&&r>0&&this._events[t].length>r){this._events[t].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. 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this};n.prototype.removeAllListeners=function(t){var e,r;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[t])delete this._events[t];return this}if(arguments.length===0){for(e in this._events){if(e==="removeListener")continue;this.removeAllListeners(e)}this.removeAllListeners("removeListener");this._events={};return this}r=this._events[t];if(i(r)){this.removeListener(t,r)}else if(r){while(r.length)this.removeListener(t,r[r.length-1])}delete this._events[t];return this};n.prototype.listeners=function(t){var e;if(!this._events||!this._events[t])e=[];else if(i(this._events[t]))e=[this._events[t]];else e=this._events[t].slice();return e};n.prototype.listenerCount=function(t){if(this._events){var e=this._events[t];if(i(e))return 1;else if(e)return e.length}return 0};n.listenerCount=function(t,e){return t.listenerCount(e)};function i(t){return typeof t==="function"}function o(t){return typeof t==="number"}function s(t){return typeof t==="object"&&t!==null}function u(t){return t===void 0}},{}],4:[function(t,e,r){e.exports=f;var n=t("events").EventEmitter;var i=t("inherits");var o=t("promisize");var s=typeof window==="undefined"?self:window;var u=s.indexedDB||s.mozIndexedDB||s.webkitIndexedDB||s.msIndexedDB;f.INDEXEDDB_SUPPORT=u!=null;f.BROADCAST_SUPPORT=s.BroadcastChannel!=null;i(f,n);function f(t,e,r){var i=this;if(typeof t!=="string")throw new Error("A name must be supplied of type string");if(!u)throw new Error("IndexedDB not supported");if(typeof e==="function")return new f(t,null,e);if(!(i instanceof f))return new f(t,e,r);if(!e)e={};n.call(i);i._db=null;i._closed=false;i._channel=null;i._waiters=[];var o=e.channel||s.BroadcastChannel;if(o){i._channel=new o(t);i._channel.onmessage=y}var a=u.open(t);a.onerror=l;a.onsuccess=p;a.onupgradeneeded=v;i.on("newListener",g);function l(t){h(t);i._close(t.target.error);if(r)r(t.target.error)}function c(t){h(t);i._close(t.target.error)}function p(t){if(i._closed){t.target.result.close()}else{i._db=t.target.result;i._db.onclose=d;i._db.onerror=c;for(var e in i._waiters)i._waiters[e]._init(null);i._waiters=null;if(r)r(null);i.emit("open")}}function v(t){var e=t.target.result;e.createObjectStore("kv",{autoIncrement:true})}function d(){i._close()}function g(t){if(t!=="add"&&t!=="set"&&t!=="remove")return;if(!i._channel)return i.emit("error",new Error("No BroadcastChannel support"))}function y(t){if(t.data.method==="add")i.emit("add",t.data);else if(t.data.method==="set")i.emit("set",t.data);else if(t.data.method==="remove")i.emit("remove",t.data)}}f.prototype.get=function(t,e){return this.transaction("readonly").get(t,e)};f.prototype.set=function(t,e,r){return this.transaction("readwrite").set(t,e,r)};f.prototype.json=function(t,e){return this.transaction("readonly").json(t,e)};f.prototype.keys=function(t,e){return this.transaction("readonly").keys(t,e)};f.prototype.values=function(t,e){return this.transaction("readonly").values(t,e)};f.prototype.remove=function(t,e){return this.transaction("readwrite").remove(t,e)};f.prototype.clear=function(t){return this.transaction("readwrite").clear(t)};f.prototype.count=function(t,e){return this.transaction("readonly").count(t,e)};f.prototype.add=function(t,e,r){return this.transaction("readwrite").add(t,e,r)};f.prototype.iterator=function(t,e){return this.transaction("readonly").iterator(t,e)};f.prototype.transaction=function(t){if(this._closed)throw new Error("Database is closed");var e=new a(this,t);if(this._db)e._init(null);else this._waiters.push(e);return e};f.prototype.close=function(){this._close()};f.prototype._close=function(t){if(this._closed)return;this._closed=true;if(this._db)this._db.close();if(this._channel)this._channel.close();this._db=null;this._channel=null;if(t)this.emit("error",t);this.emit("close");for(var e in this._waiters)this._waiters[e]._init(t||new Error("Database is closed"));this._waiters=null;this.removeAllListeners()};function a(t,e){this._kvStore=t;this._mode=e||"readwrite";this._objectStore=null;this._waiters=null;this.finished=false;this.onfinish=null;if(this._mode!=="readonly"&&this._mode!=="readwrite"){throw new Error('mode must be either "readonly" or "readwrite"')}}a.prototype._init=function(t){var e=this;if(e.finished)return;if(t)return e._close(t);var r=e._kvStore._db.transaction("kv",e._mode);r.oncomplete=i;r.onerror=o;e._objectStore=r.objectStore("kv");for(var n in e._waiters)e._waiters[n](null,e._objectStore);e._waiters=null;function i(){e._close(null)}function o(t){h(t);e._close(t.target.error)}};a.prototype._getObjectStore=function(t){if(this.finished)throw new Error("Transaction is finished");if(this._objectStore)return t(null,this._objectStore);this._waiters=this._waiters||[];this._waiters.push(t)};a.prototype.set=function(t,e,r){var n=this;if(t==null||e==null)throw new Error("A key and value must be given");r=o(r);n._getObjectStore(function(i,o){if(i)return r(i);try{var s=o.put(e,t)}catch(t){return r(t)}s.onerror=h.bind(this,r);s.onsuccess=function(){if(n._kvStore._channel){n._kvStore._channel.postMessage({method:"set",key:t,value:e})}r(null)}});return r.promise};a.prototype.add=function(t,e,r){var n=this;if(e==null&&t!=null)return n.add(undefined,t,r);if(typeof e==="function"||e==null&&r==null)return n.add(undefined,t,e);if(e==null)throw new Error("A value must be provided as an argument");r=o(r);n._getObjectStore(function(i,o){if(i)return r(i);try{var s=t==null?o.add(e):o.add(e,t)}catch(t){return r(t)}s.onerror=h.bind(this,r);s.onsuccess=function(){if(n._kvStore._channel){n._kvStore._channel.postMessage({method:"add",key:t,value:e})}r(null)}});return r.promise};a.prototype.get=function(t,e){var r=this;if(t==null)throw new Error("A key must be given as an argument");e=o(e);r._getObjectStore(function(r,n){if(r)return e(r);try{var i=n.get(t)}catch(t){return e(t)}i.onerror=h.bind(this,e);i.onsuccess=function(t){e(null,t.target.result)}});return e.promise};a.prototype.json=function(t,e){var r=this;if(typeof t==="function")return r.json(null,t);e=o(e);var n={};r.iterator(t,function(t,r){if(t)return e(t);if(r){n[r.key]=r.value;r.continue()}else{e(null,n)}});return e.promise};a.prototype.keys=function(t,e){var r=this;if(typeof t==="function")return r.keys(null,t);e=o(e);var n=[];r.iterator(t,function(t,r){if(t)return e(t);if(r){n.push(r.key);r.continue()}else{e(null,n)}});return e.promise};a.prototype.values=function(t,e){var r=this;if(typeof t==="function")return r.values(null,t);e=o(e);var n=[];r.iterator(t,function(t,r){if(t)return e(t);if(r){n.push(r.value);r.continue()}else{e(null,n)}});return e.promise};a.prototype.remove=function(t,e){var r=this;if(t==null)throw new Error("A key must be given as an argument");e=o(e);r._getObjectStore(function(n,i){if(n)return e(n);try{var o=i.delete(t)}catch(t){return 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